Train-stopping apparatus



KAI-57,899

June 5', 1.923%.

n.. @GNN TRAIN STOPPING APPARATUS Filed Dec. 6, 1921 3 Sheets-Sheet 1 awn , ML JNVENTOR Lowe's H115 ATTORNEY L. DUNN TRAIN STOPPING APPARATUS s Sheets-Sheet 2 Filed Dec. 6, 1921 @NWN INVENTOE Louis amm mmw June 5, 1923 2.

' L. DUNN TRAIN STOPPING APPARATUS 3 Sheets-Sheet 5 Filed Dec. 6, 1921 Patented June 5, 1923.

LOUIS DUNN, OF ST.. PAUL, DUNN, OE MILLBOU'RNE", ST. PAUL, MINNESOTA.-

MINNESOTA,. ASSIGNOR or TWO-THIRDS TO EDMUND L, PENNSYLVANIA, AND ONE-THIRD TO A. V. FABIAN, OF

TRAIN-STOPPING APPARATUS.

Application filed December 6, 192 1.

To all whom it may concern."

Be it known that I, LOUIS DUNN, a citizen of the United States, residing at St. Paul, in the county of Ramsey and State of Minnesota, have invented certain new and useful Improvements in Train-Stopping Apparatus, of which thefollowing isa specification.

One object: of my invention isto provide improved apparatus which will be automatically operative to: effect the stopping of a train if the engineer intentionally or unintentionally allows the train to pass a setdanger signal.

Another object is to: make the appamat'u-s of a practical and durable" construction which can be readily installed.

These objects, and other advantageous ends which will be described hereinafter, I attain in the following manner, reference being'had to the accompanying drawings in which Figure l; is a fragmentary elevation showing apparatus constructed in accordance 2 with my invention,

Figures, 2. and 3 are views of the same general charaeteras shown in: Figure l i l'lustrating the parts in other positions into which they are-moved during the operation of the apparatus to stopa train,

Figures 45, 5 and 6: are enlarged sections taken on the lines H 55"= and 66 of F igures; 1,2 and 3 respectively,

Figure 7 is an elevation showing a signal device in connection with a trip block which is movable, when the si gnal device is set, to effect movement of parts'oi the apparatus to stop a train,

Figure 8 is a View of the same general character as that shown in Figure 7 il-l'ustrating said trip block moved into position to effect the stopping of the train,

Figure 9 i's a sectional plan view taken onthe line- 9-9= of Figure 8, and Figure 10 is a sectional elevation, partly diagrammatic, illustrating apparatus automatically operative to inform a signal op erator when an attempt has been made to Y disregard a danger signal.

Referring to the' drawings, 11 represents one railiof a railroad track and 12 represents a semaphoresignal device'- which in" the" present instance is shown as" pivotally mounted att-he top' of a post 13 which; isle inclusive, 19

Serial no. 520,266}

cated at the side of thetrack'. A tripblock.

let is slid'ably mounted on; the; ties: 15 f. the I track and is connected to the signal device 12 by any suitable means This connecting means, as illustrated, includes arotd 16 which is pivotally connected to the signal device l2 and to: a bell-crank lever 17? which is pivotally supported on the post 13. The bell crank lever is connected to the trip block let by a link 18'. Thus: when the signal device is in the position shown in Figure 7 denoting a clear track, the trip block 145 will be positioned remote from the rail 11 and when: the: signal device 12 is. moved, either auto-- matically or by means-such as employed ina signal operating tower, into the posit-ion shown: in Figure 8', the tripblock' 14" will be moved? into; a position close. to the rail 11?.

Referring particularly to- Figures 1 to 6 represents a reverse quadrant which may be of any of the usual construe tions mounted within the cab of a locomotive ,1 the locomotive cab being diagrammatically represented and! indicated? at 20'; said reverse quadrant is illustrated having notches 21 in its: upper spaced apart in the direction of the length of the quadrant; the; reverse lever 22 being pivotally' mounted adjacent said reverse q-uadrant and having a spring-pressed latch- 23 adapted, when the reverse lever is swung in either direction from a central neutral position of the lever, toengage within the notches 21 of the quadrant in the usual man ner and under ordinary conditionsthe latch 23- can be removed from the notches? by means of a hand grip 24- and when so re-- leased the reverse lever will return, under usual conditions, to its central neutral position with respect to the reverse quadrant; the usual reach rod reverse lever 221 In carrying out my invention, I provide an emergency lever 26 which is; pivotal-1y supportedat 27'; said emergency 'eve'r having an arcuate or quadrant portion28'mov able in a plane parallel with and closely adjacent' one side surface 29 of the reverse quadrant 19 that when theemergencyl'ever is swung" into theposition' shown ineither of Figures 2 and the top surface 30 of the porti oni'fZ-S will conform to. the? ourof the re-' vature of the uppermost surf-ace verse quadrant I9 and will lie slightly above surface which are 25' being connected to the the same for a purpose hereinafter described. 1

' The latch 23, which is carried by the reverse lever 22, has a portion 81 which projects beyond the side surface 29 of the quadrant 19 so as to be positioned over the top surface'3O of the portion 28. Thus it will be noted that,*if the reverse lever 22 is moved ,out' of its central neutral position as shown in Figure 1 and the emergency lever is swung to raise the portion 28. intothe position shown inFigure 2,the top edge surface i -'3.0 of the portion 28- of the emergency lever 1 quadrant 19 26 with a single notch 32in its'uppensurl v .the emergency the topi of thetrip block trip block 14 isgmoved into the path of a will: engage andraise the latch 23 outof the notch in the reverse quadrant and the reverse leverwill-be allowed to move tov its central neutral position with respect to .thereverse and again central neutral notch within thegreverse quadrant.

To permit of thislatter movement, 1 provide the portion 28, of the emergency lever face 30 so, thatiwhen therever'se leverimoves into its central neutral positionasshown in Figure 3, the latch will'spring into the central neutral notch .in the portion "28 of lever and alsov into the central neutral. notch in the reverse quadrant. It willbe. further noted that owing to this arrangement the emergency leven will be held in its swung,position-with theportion J28 raised. ,The. emergency 1' depending; portion 33.v which, when the lever v is in jthe position shown in depends gtoj a, level below that. of} il l'so that if the.

lever 26 has a emergency, Elgure 2,

movementof the portion 33 during the progress of I the train along portion 83 will strike the trip block and cause the: emergency its pivot 27 to raise the portion 2-8 w1th theresult above described. a H a I Figures 2, S and )9 show the trip block in said latter position set, as adanger signal with the trip block in its operating position with respect to the emergencyilever and Figure 2 shows the latch having been raised out of the notch in which it is located of the emergency engage within the intentionally passes a the track, the

lever to, be swung on i vehicle will be stopped.

with the "signal device inv Figure '1 ready, for I the return movement of the reverselever to its central neutral position. Figure 3 shows;- moved to its cendueto engagement 1- preferablymake the emergency lever of a generally triangular formation and also preferably provide a stop member 39 which can be secured to any supporting structure such for example as the frame 40. of the locomotive; said stop39 extendingfbetween the side rails arena llpf'theemerge'ncy lever so as to limit the swinging movement lever in either direction.

In Figurev 10 I haveyillustrated means operative to inform the signal operator, such for example as. the operator toweror any other.person whosebusiness it is to attend to the operation of the signals or to see that the same areobserved;

in the signal This informing or notifying means. in the present instance consist'sof asprin'g-pressed plunger 42 which is mounted in thetrip block 14: and is adapted to be intercepted and moved by the portion 33 of the emergency lever if the signal. This plunger 42 1s plete an electric circuit through bell 43 as shown, by closing: the electric circuit between two contacts e landetfi.

Thus by the use of paratus if the engineer intentionally or unset danger signal, the train will be automatically stoppedorxif the engineer should become siclr' or %other-, wise incapacitated for the proper controlof my improved apt-1 locomotive passes the set.

' adapted to com-,

any

enunciat ing device,-such forexampleas the the train, the'train will be automatically stopped'upon passing the set danger signal.

1100 it will-be notedthat lVhile. I v have specifically mentioned a locomotive and train my invention is applicableto any vehicle passing over the track and "havingparts similarly operative to those described which result in the stopping of; the vehicle since it is obvious that even if a single vehicle set signal the such .as a locomotive passes a While I have described taking, a particular form, it will be understood that the'various parts of myinvention .may be changed without limit myself to the precise construction set forth, but consider that I am at liberty to make such changes and alterations as fairly come within the scope; of the appended claimsfl u Having thus described my invention, what I claim as new; and desire toss-cure by LettersPatent is 1'.;The combination lever 0 ing the reverse t of neutral position, of stopping apparatus having aportion operative to, cause said first means to allow said first lever to return to its tion; substantially as described.

2.. The combination with a having a reverse lever and means for holdmy invention as departing from the spirit thereof, and hence I, do not v p with" a locomotive having a reverse lever-and means for hold neutral posi- I locomotive ing the reverse lever out of neutral position,.of stopping apparatus having a portion operative to cause said first means to allow said first lever to return to its neutral position, said apparatus having a part operative to effect the stopping of the locomotive; substantially as described.

3. The combination with a locomotive having a reverse lever and means for holding the reverse lever out of neutral position, of stopping means for moving said first means out of holding position to allow said reverse lever to return to its neutral position; substantially as described.

4:. The combination with a locomotive having a reverse quadrant provided with notches, a reverse lever, and a latch carried by said ment within said notches when the reverse lever is moved out of neutral position, of stopping apparatus including a portion movable to move said latchout of said holding position and allow the reverse lever to return to its neutral position; substantially as described.

5. The combination with a locomotive having a reverse quadrant provided with notches, a reverse lever, and a latch carried by said reverse lever for holding engagement within said notches when the reverse lever is moved out of neutral stopping apparatus including movable to move said latch out of ing position and allow the reverse lever to return to its neutral position, said portion havin a notch therein in which a portion of sai latch can enter when said lever returns to its neutral position; substantially as described.

6. The combination with a locomotive having a reverse lever and means for holding the reverse lever out of neutral position, of signal operated tripping means; and stopping apparatus having a portion operative, due to engagement with said tripping means, to cause said first means to allow said reverse lever to return to its neutral osition; substantially as described.

7. he combination with a. locomotive having a reverse quadrant provided with notches, a reverse lever, and a latch carried by said reverse lever for holding engagement with said notches when the reverse lever is moved out of neutral position, of stopping apparatus including an arcuate portion operative to move said latch out of said holding position and allow said reverse lever to return to its neutral position, said arcuate portion serving as guiding means to a portion reverse lever for holding engage-' position, of

said hold keep said latch free of the notches of said quadrant during said movement of the lever to its neutral position; substantially as described.

8. The combination with a locomotive having a reverse quadrant provided with notches, a reverse lever, and a latch carried by said reverse lever for holding engagement with said notches when the re verse lever is moved out of neutral position, of stopping apparatus including an arcuate portion operative to move said latch out of said holding position and allow said reverse lever to return toits neutral position, said arcuate portion serving as guiding means to keep said latch free of the notches of said quadrant during said movement of the lever to its neutral position, said arcuate portion having a notch to allow said latch to enter therein and to enter the neutral notch of the quadrant when the lever has returned to its neutral position; substantially as described.

9. The combination with a locomotive having a reverse quadrant provided with notches, a reverse lever and a latch carried by the lever for holding engagement with the notches when the line is moved out of neutral position, of stopping apparatus including a lever consisting of diverging arms connected by an arcuate element operatiVe to move the latch out of holding position and allow the reverse lever to return to its neutral position, the arcuate element serving as guiding means to keep the latch free of the notches during the movement of the lever to neutral position, and means for limiting the movement of the arcuate lever, substantially as described.

10. The combination of a railway signal device; a signal-operated tripping devicelocated adjacent a track;

ber adapted, when the signal is set for sto ping, to engage and be actuated by the tripping device, and means, rendered operative by said member for informing the signal operator in case the vehicle passes a signal set for stopping,

substantially as described.

In testimony whereof I have signed name to this specification in the presence of Witnesses.

LOUIS DUNN. 

